The human body is a wonderful machine made up of intricately woven organs and mechanisms. In fact such is the complexity of the human body that even with the most up-to-date medical fraternity in place the smallest deviations in its functions still manage to baffle the best in the planet. There are so many fascinating facts about the human body that no matter how much you learn there is always something more for you to know. Let’s find out the top 10 body facts we expect you to know unless you are one dumb individual.
10. Human body is 70 percent water:
You must have learned this in your school science books. The human body is made up of 70 percent water. Or, put it in a more scientific way, you could say the human body is approximately 70 percent water, and water is about 11 percent hydrogen by mass but 67 percent hydrogen by atomic percent. That is also possibly the reason why water is so precious to us, the lack of which leads to a whole lot of diseases. Without a doubt the human body needs water due to its composition.
9. Single blood cell’s route through the body:
A single human blood cell takes only 60 seconds to make a complete circuit of the body. The blood cell or haematocyte are of three types – Red Blood Cells, White Blood Cells and Platelets. The complete circuit of the single blood cell around the human body includes its travel through the heart, lungs and blood vessels before finally returning back to the heart.
8. Sense of smell at night:
Olfactory perception or the sense of smell in human beings is traditionally feeble as compared to other species. But nevertheless, one of the interesting body facts is related to your olfactory perception during sleep. The fact is that you actually have no sense of smell while you’re sleeping! Yes, this is true and frankly quite worrisome.
7. Using one nostril at a time:
It is a fact that you breathe through only one nostril at a time. In fact, this is common in over 85 percent people and that could very much include you. The body switches between nostrils every few hours. The nostrils have a type of erectile tissue that swells slowly in one nostril at a time blocking most of it. It is said that the nostril you breathe through actually helps simulating different sides of your brain – your creative right side or logical left side (and that’s another of the body facts).
6. Strength of human bone:
The human bones, which support and protect the various organs of the body, produce red and white blood cells and store minerals. Bones have high resistance to pushing forces. In fact bones of the size of a matchbox can support up to 9 tonnes of concrete. Made up of dense connective tissues, the bones are as strong as granite in supporting weight.
5. Toe prints are also unique:
You must have seen or read about how important fingerprints are to identify a criminal or an unidentified person. It is because finger prints are unique to each person on earth. But hold on to your thoughts, just as our fingerprints our toe prints are unique, too. So, if fingerprints don’t lie, neither do toe-prints! In fact, as far back as 1952 a Scottish Bakery Case was solved using footprints. The forensic importance of toe-prints, thus, is as heavy as that of finger prints.
4. Strength of heart’s contraction:
You would surely know that heart pumps blood throughout the blood vessels by repeated, rhythmic contractions. But we believe you also know that the strong contraction of your heart creates enough pressure to squirt blood as far as 30 feet. Pumping blood through the whole body needs a lot of pressure and that results in strong contractions. These contractions of the heart and the thick walls of the ventricles which push blood to the body have enough pressure to spurt blood far away.
3. Growth during sleep:
You actually get taller when you sleep and that’s a very well-established body fact. It is true that you grow by 8mm when you are sleeping. Of course, now you would be wondering if that were true your height would have increased a lot by now. The next part of the fact would help you solve that mystery. Just as you grow during sleep, you also shrink back to your actual height the next day due to the effect of force of gravity on your cartilage discs.
2. 10 million new sperms each day:
It is one of the known body facts that a man’s testicle is capable of manufacturing 10 million new sperm cells each day. That’s a huge number! In fact it is so humongous that a single man’s sperm is enough to repopulate the entire planet in just 6 months. Talk about the powers of a man!
1. Largest organ of the body:
You should know that neither the liver nor the intestines is the largest organ of the body. The right answer is the skin. In fact in an adult man it covers about 1.9m2 (20sq ft). This is perhaps one of those human body facts that you should surely know. It is also believed each person sheds around 18kg (40 lb) of skin in a lifetime.